﻿// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

#nullable disable

using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms.TestUtilities;
using Windows.Win32.System.Variant;
using Windows.Win32.UI.Accessibility;
using Point = System.Drawing.Point;
using Size = System.Drawing.Size;

namespace System.Windows.Forms.Tests;

public class RadioButtonTests : AbstractButtonBaseTests
{
    [WinFormsFact]
    public void RadioButton_Ctor_Default()
    {
        using SubRadioButton control = new();
        Assert.Null(control.AccessibleDefaultActionDescription);
        Assert.Null(control.AccessibleDescription);
        Assert.Null(control.AccessibleName);
        Assert.Equal(AccessibleRole.Default, control.AccessibleRole);
        Assert.False(control.AllowDrop);
        Assert.Equal(Appearance.Normal, control.Appearance);
        Assert.Equal(AnchorStyles.Top | AnchorStyles.Left, control.Anchor);
        Assert.True(control.AutoCheck);
        Assert.False(control.AutoEllipsis);
        Assert.False(control.AutoSize);
        Assert.Equal(Control.DefaultBackColor, control.BackColor);
        Assert.Null(control.BackgroundImage);
        Assert.Equal(ImageLayout.Tile, control.BackgroundImageLayout);
        Assert.Null(control.BindingContext);
        Assert.Equal(24, control.Bottom);
        Assert.Equal(new Rectangle(0, 0, 104, 24), control.Bounds);
        Assert.False(control.CanEnableIme);
        Assert.False(control.CanFocus);
        Assert.True(control.CanRaiseEvents);
        Assert.True(control.CanSelect);
        Assert.False(control.Capture);
        Assert.True(control.CausesValidation);
        Assert.Equal(ContentAlignment.MiddleLeft, control.CheckAlign);
        Assert.False(control.Checked);
        Assert.Equal(new Size(104, 24), control.ClientSize);
        Assert.Equal(new Rectangle(0, 0, 104, 24), control.ClientRectangle);
        Assert.Null(control.Container);
        Assert.False(control.ContainsFocus);
        Assert.Null(control.ContextMenuStrip);
        Assert.Empty(control.Controls);
        Assert.Same(control.Controls, control.Controls);
        Assert.False(control.Created);
        Assert.Same(Cursors.Default, control.Cursor);
        Assert.Same(Cursors.Default, control.DefaultCursor);
        Assert.Equal(ImeMode.Disable, control.DefaultImeMode);
        Assert.Equal(new Padding(3), control.DefaultMargin);
        Assert.Equal(Size.Empty, control.DefaultMaximumSize);
        Assert.Equal(Size.Empty, control.DefaultMinimumSize);
        Assert.Equal(Padding.Empty, control.DefaultPadding);
        Assert.Equal(new Size(104, 24), control.DefaultSize);
        Assert.False(control.DesignMode);
        Assert.Equal(new Rectangle(0, 0, 104, 24), control.DisplayRectangle);
        Assert.Equal(DockStyle.None, control.Dock);
        Assert.True(control.DoubleBuffered);
        Assert.True(control.Enabled);
        Assert.NotNull(control.Events);
        Assert.Same(control.Events, control.Events);
        Assert.NotNull(control.FlatAppearance);
        Assert.Same(control.FlatAppearance, control.FlatAppearance);
        Assert.Equal(FlatStyle.Standard, control.FlatStyle);
        Assert.False(control.Focused);
        Assert.Equal(Control.DefaultFont, control.Font);
        Assert.Equal(control.Font.Height, control.FontHeight);
        Assert.Equal(Control.DefaultForeColor, control.ForeColor);
        Assert.False(control.HasChildren);
        Assert.Equal(24, control.Height);
        Assert.Null(control.Image);
        Assert.Equal(ContentAlignment.MiddleCenter, control.ImageAlign);
        Assert.Equal(-1, control.ImageIndex);
        Assert.Empty(control.ImageKey);
        Assert.Null(control.ImageList);
        Assert.Equal(ImeMode.Disable, control.ImeMode);
        Assert.Equal(ImeMode.Disable, control.ImeModeBase);
        Assert.False(control.IsAccessible);
        Assert.False(control.IsDefault);
        Assert.False(control.IsMirrored);
        Assert.NotNull(control.LayoutEngine);
        Assert.Same(control.LayoutEngine, control.LayoutEngine);
        Assert.Equal(0, control.Left);
        Assert.Equal(Point.Empty, control.Location);
        Assert.Equal(new Padding(3), control.Margin);
        Assert.Equal(Size.Empty, control.MaximumSize);
        Assert.Equal(Size.Empty, control.MinimumSize);
        Assert.Equal(Padding.Empty, control.Padding);
        Assert.Null(control.Parent);
        Assert.Equal("Microsoft\u00AE .NET", control.ProductName);
        Assert.Equal(new Size(14, 13), control.PreferredSize);
        Assert.False(control.RecreatingHandle);
        Assert.Null(control.Region);
        Assert.True(control.ResizeRedraw);
        Assert.Equal(104, control.Right);
        Assert.Equal(RightToLeft.No, control.RightToLeft);
        Assert.True(control.ShowFocusCues);
        Assert.True(control.ShowKeyboardCues);
        Assert.Null(control.Site);
        Assert.Equal(new Size(104, 24), control.Size);
        Assert.Equal(0, control.TabIndex);
        Assert.False(control.TabStop);
        Assert.Empty(control.Text);
        Assert.Equal(ContentAlignment.MiddleLeft, control.TextAlign);
        Assert.Equal(TextImageRelation.Overlay, control.TextImageRelation);
        Assert.Equal(0, control.Top);
        Assert.Null(control.TopLevelControl);
        Assert.True(control.UseCompatibleTextRendering);
        Assert.True(control.UseMnemonic);
        Assert.True(control.UseVisualStyleBackColor);
        Assert.False(control.UseWaitCursor);
        Assert.True(control.Visible);
        Assert.Equal(104, control.Width);

        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void RadioButton_CreateParams_GetDefault_ReturnsExpected()
    {
        using SubRadioButton control = (SubRadioButton)CreateButton();
        CreateParams createParams = control.CreateParams;
        Assert.Null(createParams.Caption);
        Assert.Equal("Button", createParams.ClassName);
        Assert.Equal(0x8, createParams.ClassStyle);
        Assert.Equal(0, createParams.ExStyle);
        Assert.Equal(24, createParams.Height);
        Assert.Equal(IntPtr.Zero, createParams.Parent);
        Assert.Null(createParams.Param);
        Assert.Equal(0x5600000B, createParams.Style);
        Assert.Equal(104, createParams.Width);
        Assert.Equal(0, createParams.X);
        Assert.Equal(0, createParams.Y);
        Assert.Same(createParams, control.CreateParams);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(true, 0x5600000B)]
    [InlineData(false, 0x5600000B)]
    public void RadioButton_CreateParams_GetUserPaint_ReturnsExpected(bool userPaint, int expectedStyle)
    {
        using SubRadioButton control = (SubRadioButton)CreateButton();
        control.SetStyle(ControlStyles.UserPaint, userPaint);

        CreateParams createParams = control.CreateParams;
        Assert.Null(createParams.Caption);
        Assert.Equal("Button", createParams.ClassName);
        Assert.Equal(0x8, createParams.ClassStyle);
        Assert.Equal(0, createParams.ExStyle);
        Assert.Equal(24, createParams.Height);
        Assert.Equal(IntPtr.Zero, createParams.Parent);
        Assert.Null(createParams.Param);
        Assert.Equal(expectedStyle, createParams.Style);
        Assert.Equal(104, createParams.Width);
        Assert.Equal(0, createParams.X);
        Assert.Equal(0, createParams.Y);
        Assert.Same(createParams, control.CreateParams);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InvalidEnumData<ContentAlignment>]
    public void RadioButton_CheckAlign_SetInvalidValue_ThrowsInvalidEnumArgumentException(ContentAlignment value)
    {
        using RadioButton control = new();
        Assert.Throws<InvalidEnumArgumentException>("value", () => control.CheckAlign = value);
    }

    public static TheoryData<ContentAlignment> CheckAlignData =>
    [
        ContentAlignment.TopLeft,
        ContentAlignment.TopRight,
        ContentAlignment.BottomCenter,
        ContentAlignment.BottomLeft,
        ContentAlignment.BottomRight,
        ContentAlignment.MiddleLeft,
        ContentAlignment.MiddleRight,
        ContentAlignment.TopCenter,
        ContentAlignment.MiddleCenter
    ];

    [WinFormsTheory]
    [MemberData(nameof(CheckAlignData))]
    public void RadioButton_CheckAlign_Set_GetReturnsExpected(ContentAlignment value)
    {
        using RadioButton control = new();
        control.CheckAlign = value;
        control.CheckAlign.Should().Be(value);

        // Set same.
        control.CheckAlign = value;
        control.CheckAlign.Should().Be(value);
    }

    [WinFormsTheory]
    [BoolData]
    public void RadioRadioButton_TabStop_Set_GetReturnsExpected(bool value)
    {
        using RadioButton control = new()
        {
            TabStop = value
        };
        Assert.Equal(value, control.TabStop);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.TabStop = value;
        Assert.Equal(value, control.TabStop);
        Assert.False(control.IsHandleCreated);

        // Set different.
        control.TabStop = value;
        Assert.Equal(value, control.TabStop);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [BoolData]
    public void RadioRadioButton_TabStop_SetWithHandle_GetReturnsExpected(bool value)
    {
        using RadioButton control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;

        control.TabStop = value;
        Assert.Equal(value, control.TabStop);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Set same.
        control.TabStop = value;
        Assert.Equal(value, control.TabStop);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Set different.
        control.TabStop = value;
        Assert.Equal(value, control.TabStop);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsFact]
    public void RadioRadioButton_TabStop_SetWithHandler_CallsTabStopChanged()
    {
        using RadioButton control = new()
        {
            TabStop = true
        };
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(EventArgs.Empty, e);
            callCount++;
        };
        control.TabStopChanged += handler;

        // Set different.
        control.TabStop = false;
        Assert.False(control.TabStop);
        Assert.Equal(1, callCount);

        // Set same.
        control.TabStop = false;
        Assert.False(control.TabStop);
        Assert.Equal(1, callCount);

        // Set different.
        control.TabStop = true;
        Assert.True(control.TabStop);
        Assert.Equal(2, callCount);

        // Remove handler.
        control.TabStopChanged -= handler;
        control.TabStop = false;
        Assert.False(control.TabStop);
        Assert.Equal(2, callCount);
    }

    public static IEnumerable<object[]> TextAlign_Set_TestData()
    {
        foreach (bool autoSize in new bool[] { true, false })
        {
            foreach (FlatStyle flatStyle in Enum.GetValues(typeof(FlatStyle)))
            {
                foreach (ContentAlignment value in Enum.GetValues(typeof(ContentAlignment)))
                {
                    yield return new object[] { autoSize, flatStyle, value };
                }
            }
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(TextAlign_Set_TestData))]
    public void RadioRadioButton_TextAlign_Set_GetReturnsExpected(bool autoSize, FlatStyle flatStyle, ContentAlignment value)
    {
        using SubRadioButton control = new()
        {
            AutoSize = autoSize,
            FlatStyle = flatStyle
        };
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;

        control.TextAlign = value;
        Assert.Equal(value, control.TextAlign);
        Assert.Equal(0, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.TextAlign = value;
        Assert.Equal(value, control.TextAlign);
        Assert.Equal(0, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    public static IEnumerable<object[]> TextAlign_SetWithHandle_TestData()
    {
        foreach (bool autoSize in new bool[] { true, false })
        {
            foreach (ContentAlignment value in Enum.GetValues(typeof(ContentAlignment)))
            {
                int expectedCallCount = value == ContentAlignment.MiddleLeft ? 0 : 1;
                yield return new object[] { autoSize, FlatStyle.Flat, value, expectedCallCount, 0 };
                yield return new object[] { autoSize, FlatStyle.Popup, value, expectedCallCount, 0 };
                yield return new object[] { autoSize, FlatStyle.Standard, value, expectedCallCount, 0 };
                yield return new object[] { autoSize, FlatStyle.System, value, expectedCallCount, expectedCallCount };
            }
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(TextAlign_SetWithHandle_TestData))]
    public void RadioRadioButton_TextAlign_SetWithHandle_GetReturnsExpected(bool autoSize, FlatStyle flatStyle, ContentAlignment value, int expectedInvalidatedCallCount, int expectedStyleChangedCallCount)
    {
        using SubRadioButton control = new()
        {
            AutoSize = autoSize,
            FlatStyle = flatStyle
        };
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;

        control.TextAlign = value;
        Assert.Equal(value, control.TextAlign);
        Assert.Equal(0, layoutCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
        Assert.Equal(expectedStyleChangedCallCount, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Set same.
        control.TextAlign = value;
        Assert.Equal(value, control.TextAlign);
        Assert.Equal(0, layoutCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
        Assert.Equal(expectedStyleChangedCallCount, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [InvalidEnumData<ContentAlignment>]
    public void RadioRadioButton_TextAlign_SetInvalidValue_ThrowsInvalidEnumArgumentException(ContentAlignment value)
    {
        using SubRadioButton control = new();
        Assert.Throws<InvalidEnumArgumentException>("value", () => control.TextAlign = value);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_Invoke_ReturnsExpected_IfHandleIsCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };

        control.CreateControl();
        Assert.True(control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.True(control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.NotEmpty(instance.DefaultAction);
        Assert.Equal(AccessibleStates.Focusable, instance.State);
        Assert.Equal(AccessibleRole.RadioButton, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_Invoke_ReturnsExpected_IfHandleIsNotCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };

        Assert.False(control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.False(control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.NotEmpty(instance.DefaultAction);
        Assert.Equal(AccessibleStates.None, instance.State);
        Assert.Equal(AccessibleRole.RadioButton, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_InvokeWithCustomRole_ReturnsExpected_IfHandleIsCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle,
            AccessibleRole = AccessibleRole.HelpBalloon
        };

        control.CreateControl();
        Assert.True(control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.True(control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.NotEmpty(instance.DefaultAction);
        Assert.Equal(AccessibleStates.Focusable, instance.State);
        Assert.Equal(AccessibleRole.HelpBalloon, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_InvokeWithCustomRole_ReturnsExpected_IfHandleIsNotCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle,
            AccessibleRole = AccessibleRole.HelpBalloon
        };

        Assert.False(control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.False(control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.NotEmpty(instance.DefaultAction);
        Assert.Equal(AccessibleStates.None, instance.State);
        Assert.Equal(AccessibleRole.HelpBalloon, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [InlineData(FlatStyle.Flat, "", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.Popup, "", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.Standard, "", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.System, "", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.Flat, "Description", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.Popup, "Description", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.Standard, "Description", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.System, "Description", true, AccessibleStates.Focusable)]
    [InlineData(FlatStyle.Flat, "", false, AccessibleStates.None)]
    [InlineData(FlatStyle.Popup, "", false, AccessibleStates.None)]
    [InlineData(FlatStyle.Standard, "", false, AccessibleStates.None)]
    [InlineData(FlatStyle.System, "", false, AccessibleStates.None)]
    [InlineData(FlatStyle.Flat, "Description", false, AccessibleStates.None)]
    [InlineData(FlatStyle.Popup, "Description", false, AccessibleStates.None)]
    [InlineData(FlatStyle.Standard, "Description", false, AccessibleStates.None)]
    [InlineData(FlatStyle.System, "Description", false, AccessibleStates.None)]
    public void RadioButton_CreateAccessibilityInstance_InvokeWithCustomDefaultActionDescription_ReturnsExpected(FlatStyle flatStyle, string defaultActionDescription, bool createControl, AccessibleStates expectedAccessibleStates)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle,
            AccessibleDefaultActionDescription = defaultActionDescription
        };

        if (createControl)
        {
            control.CreateControl();
        }

        Assert.Equal(createControl, control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.Equal(createControl, control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.Equal(defaultActionDescription, instance.DefaultAction);
        Assert.Equal(expectedAccessibleStates, instance.State);
        Assert.Equal(AccessibleRole.RadioButton, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_InvokeChecked_ReturnsExpected_IfHandleIsCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle,
            Checked = true
        };

        control.CreateControl();
        Assert.True(control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.True(control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.NotEmpty(instance.DefaultAction);
        Assert.Equal(AccessibleStates.Focusable | AccessibleStates.Checked, instance.State);
        Assert.Equal(AccessibleRole.RadioButton, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_InvokeChecked_ReturnsExpected_IfHandleIsNotCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle,
            Checked = true
        };

        Assert.False(control.IsHandleCreated);
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        Assert.False(control.IsHandleCreated);
        Assert.NotNull(instance);
        Assert.Same(control, instance.Owner);
        Assert.NotEmpty(instance.DefaultAction);
        Assert.Equal(AccessibleStates.Checked, instance.State);
        Assert.Equal(AccessibleRole.RadioButton, instance.Role);
        Assert.NotSame(control.CreateAccessibilityInstance(), instance);
        Assert.NotSame(control.AccessibilityObject, instance);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_InvokeDoDefaultAction_CallsOnClick_IfHandleIsCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };

        control.CreateControl();
        int callCount = 0;
        control.Click += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(EventArgs.Empty, e);
            callCount++;
        };
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        instance.DoDefaultAction();
        Assert.Equal(1, callCount);
    }

    [WinFormsTheory]
    [EnumData<FlatStyle>]
    public void RadioButton_CreateAccessibilityInstance_InvokeDoDefaultAction_CallsOnClick_IfHandleIsNotCreated(FlatStyle flatStyle)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };

        int callCount = 0;
        control.Click += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(EventArgs.Empty, e);
            callCount++;
        };
        RadioButton.RadioButtonAccessibleObject instance = Assert.IsType<RadioButton.RadioButtonAccessibleObject>(control.CreateAccessibilityInstance());
        instance.DoDefaultAction();
        Assert.Equal(0, callCount);
    }

    [WinFormsFact]
    public void RadioButton_GetAutoSizeMode_Invoke_ReturnsExpected()
    {
        using SubRadioButton control = new();
        Assert.Equal(AutoSizeMode.GrowAndShrink, control.GetAutoSizeMode());
    }

    [WinFormsTheory]
    [InlineData(ControlStyles.ContainerControl, false)]
    [InlineData(ControlStyles.UserPaint, true)]
    [InlineData(ControlStyles.Opaque, true)]
    [InlineData(ControlStyles.ResizeRedraw, true)]
    [InlineData(ControlStyles.FixedWidth, false)]
    [InlineData(ControlStyles.FixedHeight, false)]
    [InlineData(ControlStyles.StandardClick, false)]
    [InlineData(ControlStyles.Selectable, true)]
    [InlineData(ControlStyles.UserMouse, true)]
    [InlineData(ControlStyles.SupportsTransparentBackColor, true)]
    [InlineData(ControlStyles.StandardDoubleClick, true)]
    [InlineData(ControlStyles.AllPaintingInWmPaint, true)]
    [InlineData(ControlStyles.CacheText, true)]
    [InlineData(ControlStyles.EnableNotifyMessage, false)]
    [InlineData(ControlStyles.DoubleBuffer, false)]
    [InlineData(ControlStyles.OptimizedDoubleBuffer, true)]
    [InlineData(ControlStyles.UseTextForAccessibility, true)]
    [InlineData((ControlStyles)0, true)]
    [InlineData((ControlStyles)int.MaxValue, false)]
    [InlineData((ControlStyles)(-1), false)]
    public void RadioButton_GetStyle_Invoke_ReturnsExpected(ControlStyles flag, bool expected)
    {
        using SubRadioButton control = new();
        Assert.Equal(expected, control.GetStyle(flag));

        // Call again to test caching.
        Assert.Equal(expected, control.GetStyle(flag));
    }

    [WinFormsFact]
    public void RadioButton_GetTopLevel_Invoke_ReturnsExpected()
    {
        using SubRadioButton control = new();
        Assert.False(control.GetTopLevel());
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnCheckedChanged_Invoke_CallsCheckedChanged(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.CheckedChanged += handler;
        control.OnCheckedChanged(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.CheckedChanged -= handler;
        control.OnCheckedChanged(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnCheckedChanged_InvokeWithHandle_CallsCheckedChanged(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.CheckedChanged += handler;
        control.OnCheckedChanged(eventArgs);
        Assert.Equal(1, callCount);
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.CheckedChanged -= handler;
        control.OnCheckedChanged(eventArgs);
        Assert.Equal(1, callCount);
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    public static IEnumerable<object[]> OnClick_TestData()
    {
        foreach (bool autoCheck in new bool[] { true, false })
        {
            yield return new object[] { autoCheck, null };
            yield return new object[] { autoCheck, new EventArgs() };
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(OnClick_TestData))]
    public void RadioButton_OnClick_Invoke_CallsClick(bool autoCheck, EventArgs eventArgs)
    {
        using SubRadioButton control = new()
        {
            AutoCheck = autoCheck
        };
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            Assert.Equal(autoCheck, control.Checked);
            callCount++;
        };

        // Call with handler.
        control.Click += handler;
        control.OnClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(autoCheck, control.Checked);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.Click -= handler;
        control.OnClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(autoCheck, control.Checked);
        Assert.False(control.IsHandleCreated);
    }

    public static IEnumerable<object[]> OnClick_WithHandle_TestData()
    {
        yield return new object[] { true, null, 1 };
        yield return new object[] { true, new EventArgs(), 1 };
        yield return new object[] { false, null, 0 };
        yield return new object[] { false, new EventArgs(), 0 };
    }

    [WinFormsTheory]
    [MemberData(nameof(OnClick_WithHandle_TestData))]
    public void RadioButton_OnClick_InvokeWithHandle_CallsClick(bool autoCheck, EventArgs eventArgs, int expectedInvalidatedCallCount)
    {
        using SubRadioButton control = new()
        {
            AutoCheck = autoCheck
        };
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            Assert.Equal(autoCheck, control.Checked);
            callCount++;
        };

        // Call with handler.
        control.Click += handler;
        control.OnClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(autoCheck, control.Checked);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.Click -= handler;
        control.OnClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(autoCheck, control.Checked);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnDoubleClick_Invoke_CallsDoubleClick(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.DoubleClick += handler;
        control.OnDoubleClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.DoubleClick -= handler;
        control.OnDoubleClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnEnter_Invoke_CallsEnter(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.Enter += handler;
        control.OnEnter(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.Enter -= handler;
        control.OnEnter(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnEnter_InvokeWithHandle_CallsEnter(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.Enter += handler;
        control.OnEnter(eventArgs);
        Assert.Equal(1, callCount);
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        Assert.True(control.IsHandleCreated);
        Assert.True(invalidatedCallCount >= 0);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.Enter -= handler;
        control.OnEnter(eventArgs);
        Assert.Equal(1, callCount);
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        Assert.True(control.IsHandleCreated);
        Assert.True(invalidatedCallCount >= 0);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnHandleCreated_Invoke_CallsHandleCreated(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleCreated += handler;
        control.OnHandleCreated(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.HandleCreated -= handler;
        control.OnHandleCreated(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnHandleCreated_InvokeWithHandle_CallsHandleCreated(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleCreated += handler;
        control.OnHandleCreated(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);

        // Remove handler.
        control.HandleCreated -= handler;
        control.OnHandleCreated(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnHandleDestroyed_Invoke_CallsHandleDestroyed(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleDestroyed += handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.HandleDestroyed -= handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void RadioButton_OnHandleDestroyed_InvokeWithHandle_CallsHandleDestroyed(EventArgs eventArgs)
    {
        using SubRadioButton control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleDestroyed += handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);

        // Remove handler.
        control.HandleDestroyed -= handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(CommonTestHelperEx), nameof(CommonTestHelperEx.GetMouseEventArgsTheoryData))]
    public void RadioButton_OnMouseDoubleClick_Invoke_CallsMouseDoubleClick(MouseEventArgs eventArgs)
    {
        using SubRadioButton control = new();
        int callCount = 0;
        MouseEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.MouseDoubleClick += handler;
        control.OnMouseDoubleClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.MouseDoubleClick -= handler;
        control.OnMouseDoubleClick(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    public static IEnumerable<object[]> OnMouseUp_TestData()
    {
        foreach (FlatStyle flatStyle in Enum.GetValues(typeof(FlatStyle)))
        {
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.None, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Left, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Middle, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Right, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.None, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Left, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Middle, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Right, 1, 2, 3, 4) };
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(OnMouseUp_TestData))]
    public void RadioButton_OnMouseUp_Invoke_CallsMouseUp(FlatStyle flatStyle, MouseEventArgs eventArgs)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };
        int callCount = 0;
        MouseEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        int mouseClickCallCount = 0;
        control.MouseClick += (sender, e) => mouseClickCallCount++;

        // Call with handler.
        control.MouseUp += handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.MouseUp -= handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.False(control.IsHandleCreated);
    }

    public static IEnumerable<object[]> OnMouseUp_MouseDown_TestData()
    {
        foreach (FlatStyle flatStyle in Enum.GetValues(typeof(FlatStyle)))
        {
            bool expectedIsHandleCreated = flatStyle != FlatStyle.System;
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.None, 1, 2, 3, 4), false };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Left, 1, 2, 3, 4), expectedIsHandleCreated };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Middle, 1, 2, 3, 4), false };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Right, 1, 2, 3, 4), false };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.None, 1, 2, 3, 4), false };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Left, 1, 2, 3, 4), expectedIsHandleCreated };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Middle, 1, 2, 3, 4), false };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Right, 1, 2, 3, 4), false };
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(OnMouseUp_MouseDown_TestData))]
    public void RadioButton_OnMouseUp_InvokeMouseDown_CallsMouseUp(FlatStyle flatStyle, MouseEventArgs eventArgs, bool expectedIsHandleCreated)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };
        control.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
        int callCount = 0;
        MouseEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        int mouseClickCallCount = 0;
        control.MouseClick += (sender, e) => mouseClickCallCount++;

        // Call with handler.
        control.MouseUp += handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.Equal(expectedIsHandleCreated, control.IsHandleCreated);

        // Remove handler.
        control.MouseUp -= handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.Equal(expectedIsHandleCreated, control.IsHandleCreated);
    }

    [WinFormsTheory]
    [MemberData(nameof(OnMouseUp_TestData))]
    public void RadioButton_OnMouseUp_InvokeWithHandle_CallsMouseUp(FlatStyle flatStyle, MouseEventArgs eventArgs)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        MouseEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        int mouseClickCallCount = 0;
        control.MouseClick += (sender, e) => mouseClickCallCount++;

        // Call with handler.
        control.MouseUp += handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.MouseUp -= handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    public static IEnumerable<object[]> OnMouseUp_WithHandle_TestData()
    {
        foreach (FlatStyle flatStyle in Enum.GetValues(typeof(FlatStyle)))
        {
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.None, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Left, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Middle, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new MouseEventArgs(MouseButtons.Right, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.None, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Left, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Middle, 1, 2, 3, 4) };
            yield return new object[] { flatStyle, new HandledMouseEventArgs(MouseButtons.Right, 1, 2, 3, 4) };
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(OnMouseUp_WithHandle_TestData))]
    public void RadioButton_OnMouseUp_InvokeMouseDownWithHandle_CallsMouseUp(FlatStyle flatStyle, MouseEventArgs eventArgs)
    {
        using SubRadioButton control = new()
        {
            FlatStyle = flatStyle
        };
        control.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        MouseEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        int mouseClickCallCount = 0;
        control.MouseClick += (sender, e) => mouseClickCallCount++;

        // Call with handler.
        control.MouseUp += handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.MouseUp -= handler;
        control.OnMouseUp(eventArgs);
        Assert.Equal(1, callCount);
        Assert.Equal(0, clickCallCount);
        Assert.Equal(0, mouseClickCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsFact]
    public void RadioButton_OnMouseUp_NullE_ThrowsNullReferenceException()
    {
        using SubRadioButton control = new();
        Assert.Throws<NullReferenceException>(() => control.OnMouseUp(null));
    }

    [WinFormsFact]
    public void RadioButton_PerformClick_Invoke_CallsClick()
    {
        using SubRadioButton control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(EventArgs.Empty, e);
            callCount++;
        };

        // Call with handler.
        control.Click += handler;
        control.PerformClick();
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.Click -= handler;
        control.PerformClick();
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void RadioButton_PerformClick_InvokeWithHandle_CallsClick()
    {
        using SubRadioButton control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(EventArgs.Empty, e);
            callCount++;
        };

        // Call with handler.
        control.Click += handler;
        control.PerformClick();
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(2, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.Click -= handler;
        control.PerformClick();
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(3, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [InlineData(true, "", 'a', false)]
    [InlineData(true, "", char.MinValue, false)]
    [InlineData(true, "&a", 'a', true)]
    [InlineData(true, "&a", 'b', false)]
    [InlineData(true, "&&a", 'a', false)]
    [InlineData(true, "&", 'a', false)]
    [InlineData(true, "text", 'a', false)]
    [InlineData(false, "", 'a', false)]
    [InlineData(false, "", char.MinValue, false)]
    [InlineData(false, "&a", 'a', false)]
    [InlineData(false, "&a", 'b', false)]
    [InlineData(false, "&&a", 'a', false)]
    [InlineData(false, "&", 'a', false)]
    [InlineData(false, "text", 'a', false)]
    public void RadioButton_ProcessMnemonic_Invoke_ReturnsExpected(bool useMnemonic, string text, char charCode, bool expected)
    {
        using SubRadioButton control = new()
        {
            UseMnemonic = useMnemonic,
            Text = text
        };
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        Assert.Equal(expected, control.ProcessMnemonic(charCode));
        Assert.Equal(0, clickCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(true, "", 'a')]
    [InlineData(true, "", char.MinValue)]
    [InlineData(true, "&a", 'a')]
    [InlineData(true, "&a", 'b')]
    [InlineData(true, "&&a", 'a')]
    [InlineData(true, "&", 'a')]
    [InlineData(true, "text", 'a')]
    [InlineData(false, "", 'a')]
    [InlineData(false, "", char.MinValue)]
    [InlineData(false, "&a", 'a')]
    [InlineData(false, "&a", 'b')]
    [InlineData(false, "&&a", 'a')]
    [InlineData(false, "&", 'a')]
    [InlineData(false, "text", 'a')]
    public void RadioButton_ProcessMnemonic_InvokeCantProcessMnemonic_ReturnsFalse(bool useMnemonic, string text, char charCode)
    {
        using SubRadioButton control = new()
        {
            UseMnemonic = useMnemonic,
            Text = text,
            Enabled = false
        };
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        Assert.False(control.ProcessMnemonic(charCode));
        Assert.Equal(0, clickCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(true, "", 'a', false)]
    [InlineData(true, "", char.MinValue, false)]
    [InlineData(true, "&a", 'a', true)]
    [InlineData(true, "&a", 'b', false)]
    [InlineData(true, "&&a", 'a', false)]
    [InlineData(true, "&", 'a', false)]
    [InlineData(true, "text", 'a', false)]
    [InlineData(false, "", 'a', false)]
    [InlineData(false, "", char.MinValue, false)]
    [InlineData(false, "&a", 'a', false)]
    [InlineData(false, "&a", 'b', false)]
    [InlineData(false, "&&a", 'a', false)]
    [InlineData(false, "&", 'a', false)]
    [InlineData(false, "text", 'a', false)]
    public void RadioButton_ProcessMnemonic_InvokeWithHandle_ReturnsExpected(bool useMnemonic, string text, char charCode, bool expected)
    {
        using SubRadioButton control = new()
        {
            UseMnemonic = useMnemonic,
            Text = text
        };
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;

        Assert.Equal(expected, control.ProcessMnemonic(charCode));
        Assert.Equal(0, clickCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [InlineData(true, "", 'a')]
    [InlineData(true, "", char.MinValue)]
    [InlineData(true, "&a", 'a')]
    [InlineData(true, "&a", 'b')]
    [InlineData(true, "&&a", 'a')]
    [InlineData(true, "&", 'a')]
    [InlineData(true, "text", 'a')]
    [InlineData(false, "", 'a')]
    [InlineData(false, "", char.MinValue)]
    [InlineData(false, "&a", 'a')]
    [InlineData(false, "&a", 'b')]
    [InlineData(false, "&&a", 'a')]
    [InlineData(false, "&", 'a')]
    [InlineData(false, "text", 'a')]
    public void RadioButton_ProcessMnemonic_InvokeCantProcessMnemonicWithHandle_ReturnsFalse(bool useMnemonic, string text, char charCode)
    {
        using SubRadioButton control = new()
        {
            UseMnemonic = useMnemonic,
            Text = text,
            Enabled = false
        };
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;

        int clickCallCount = 0;
        control.Click += (sender, e) => clickCallCount++;
        Assert.False(control.ProcessMnemonic(charCode));
        Assert.Equal(0, clickCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(0, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsFact]
    public void RadioButton_RaiseAutomationEvent_Invoke_Success()
    {
        using TestRadioButton radioButton = new();
        Assert.False(radioButton.IsHandleCreated);

        var accessibleObject = (SubRadioButtonAccessibleObject)radioButton.AccessibilityObject;
        Assert.Equal(0, accessibleObject.RaiseAutomationEventCallsCount);
        Assert.Equal(0, accessibleObject.RaiseAutomationPropertyChangedEventCallsCount);

        radioButton.PerformClick();

        Assert.Equal(1, accessibleObject.RaiseAutomationEventCallsCount);
        Assert.Equal(1, accessibleObject.RaiseAutomationPropertyChangedEventCallsCount);
        Assert.False(radioButton.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(1, 2)]
    [InlineData(0, 0)]
    [InlineData(-1, -2)]
    public void RadioButton_RescaleConstantsForDpi_Invoke_Nop(int deviceDpiOld, int deviceDpiNew)
    {
        using SubRadioButton control = new();
        control.RescaleConstantsForDpi(deviceDpiOld, deviceDpiNew);
        Assert.False(control.IsHandleCreated);

        // Call again.
        control.RescaleConstantsForDpi(deviceDpiOld, deviceDpiNew);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void RadioButton_ToString_Invoke_ReturnsExpected()
    {
        using RadioButton control = new();
        Assert.Equal("System.Windows.Forms.RadioButton, Checked: False", control.ToString());
    }

    [WinFormsFact]
    public void RadioButton_ToString_InvokeShortText_ReturnsExpected()
    {
        using RadioButton control = new()
        {
            Text = "Text"
        };
        Assert.Equal("System.Windows.Forms.RadioButton, Checked: False", control.ToString());
    }

    private class SubRadioButton : RadioButton
    {
        public new bool CanEnableIme => base.CanEnableIme;

        public new bool CanRaiseEvents => base.CanRaiseEvents;

        public new CreateParams CreateParams => base.CreateParams;

        public new Cursor DefaultCursor => base.DefaultCursor;

        public new ImeMode DefaultImeMode => base.DefaultImeMode;

        public new Padding DefaultMargin => base.DefaultMargin;

        public new Size DefaultMaximumSize => base.DefaultMaximumSize;

        public new Size DefaultMinimumSize => base.DefaultMinimumSize;

        public new Padding DefaultPadding => base.DefaultPadding;

        public new Size DefaultSize => base.DefaultSize;

        public new bool DesignMode => base.DesignMode;

        public new bool DoubleBuffered
        {
            get => base.DoubleBuffered;
            set => base.DoubleBuffered = value;
        }

        public new EventHandlerList Events => base.Events;

        public new int FontHeight
        {
            get => base.FontHeight;
            set => base.FontHeight = value;
        }

        public new ImeMode ImeModeBase
        {
            get => base.ImeModeBase;
            set => base.ImeModeBase = value;
        }

        public new bool IsHandleCreated => base.IsHandleCreated;

        public new bool IsDefault
        {
            get => base.IsDefault;
            set => base.IsDefault = value;
        }

        public new bool ResizeRedraw
        {
            get => base.ResizeRedraw;
            set => base.ResizeRedraw = value;
        }

        public new bool ShowFocusCues => base.ShowFocusCues;

        public new bool ShowKeyboardCues => base.ShowKeyboardCues;

        public new AccessibleObject CreateAccessibilityInstance() => base.CreateAccessibilityInstance();

        public new void CreateControl() => base.CreateControl();

        public new AutoSizeMode GetAutoSizeMode() => base.GetAutoSizeMode();

        public new bool GetStyle(ControlStyles flag) => base.GetStyle(flag);

        public new bool GetTopLevel() => base.GetTopLevel();

        public new void OnCheckedChanged(EventArgs e) => base.OnCheckedChanged(e);

        public new void OnClick(EventArgs e) => base.OnClick(e);

        public new void OnDoubleClick(EventArgs e) => base.OnDoubleClick(e);

        public new void OnEnter(EventArgs e) => base.OnEnter(e);

        public new void OnHandleCreated(EventArgs e) => base.OnHandleCreated(e);

        public new void OnHandleDestroyed(EventArgs e) => base.OnHandleDestroyed(e);

        public new void OnMouseDoubleClick(MouseEventArgs e) => base.OnMouseDoubleClick(e);

        public new void OnMouseDown(MouseEventArgs eventargs) => base.OnMouseDown(eventargs);

        public new void OnMouseUp(MouseEventArgs eventargs) => base.OnMouseUp(eventargs);

        public new bool ProcessMnemonic(char charCode) => base.ProcessMnemonic(charCode);

        public new void RescaleConstantsForDpi(int deviceDpiOld, int deviceDpiNew) => base.RescaleConstantsForDpi(deviceDpiOld, deviceDpiNew);

        public new void SetStyle(ControlStyles flag, bool value) => base.SetStyle(flag, value);
    }

    private class TestRadioButton : RadioButton
    {
        protected override AccessibleObject CreateAccessibilityInstance()
        {
            return new SubRadioButtonAccessibleObject(this);
        }
    }

    private class SubRadioButtonAccessibleObject : RadioButton.RadioButtonAccessibleObject
    {
        public SubRadioButtonAccessibleObject(RadioButton owner) : base(owner)
        {
            RaiseAutomationEventCallsCount = 0;
            RaiseAutomationPropertyChangedEventCallsCount = 0;
        }

        public int RaiseAutomationEventCallsCount { get; private set; }

        public int RaiseAutomationPropertyChangedEventCallsCount { get; private set; }

        internal override bool RaiseAutomationEvent(UIA_EVENT_ID eventId)
        {
            RaiseAutomationEventCallsCount++;
            return base.RaiseAutomationEvent(eventId);
        }

        internal override bool RaiseAutomationPropertyChangedEvent(UIA_PROPERTY_ID propertyId, VARIANT oldValue, VARIANT newValue)
        {
            RaiseAutomationPropertyChangedEventCallsCount++;
            return base.RaiseAutomationPropertyChangedEvent(propertyId, oldValue, newValue);
        }
    }

    [WinFormsTheory]
    [InlineData(Appearance.Button, FlatStyle.Standard)]
    [InlineData(Appearance.Button, FlatStyle.Flat)]
    [InlineData(Appearance.Button, FlatStyle.Popup)]
    [InlineData(Appearance.Button, FlatStyle.System)]
    [InlineData(Appearance.Normal, FlatStyle.Standard)]
    [InlineData(Appearance.Normal, FlatStyle.Flat)]
    [InlineData(Appearance.Normal, FlatStyle.Popup)]
    [InlineData(Appearance.Normal, FlatStyle.System)]
    public void RadioButton_OverChangeRectangle_Get(Appearance appearance, FlatStyle flatStyle) => base.ButtonBase_OverChangeRectangle_Get(appearance, flatStyle);

    protected override ButtonBase CreateButton() => new SubRadioButton();
}
